Hedge Fund Treasury Positioning Reaches Critical Levels Amid Unwind Risk

Multiple hedge funds have increased exposure to long-duration U.S. Treasury bonds over the past 18 months, building positions that now exceed $120 billion in aggregate notional value. This buildup has coincided with a narrowing of Treasury yield spreads, particularly in the 10- and 30-year segments, where the 10-year yield has traded within a 12-basis-point range since November 2025. The concentration is most pronounced among a cluster of funds managing over $20 billion each, with three major players accounting for nearly 40% of the total net long exposure. These funds have maintained leveraged positions averaging 2.8x their equity, amplifying both potential returns and downside risk. Market participants note that a 10% decline in Treasury prices could trigger margin calls across the group, forcing liquidations to maintain capital requirements. Recent data from clearinghouse reports shows that daily margin requirements for Treasury futures rose by 28% in January 2026, signaling heightened stress in the repo market. Intra-day volatility in 10-year note futures spiked to 1.3% on February 3, the highest since 2022, as some funds began adjusting positions ahead of a potential rate hike signal from the Federal Reserve. The implications extend beyond hedge funds. Market makers have reduced inventory in longer-dated bonds, increasing bid-ask spreads by up to 15% in the 30-year sector. This reduction in liquidity could compound price swings during a disorderly exit, affecting pension funds, asset managers, and central bank balance sheets that hold significant Treasury holdings.